com.sun.tools.xjc.reader.gbind

Class Expression

public abstract class Expression extends Object

This builds content models.

Field Summary
static Expression	EPSILON Expression that represents epsilon, the length-0 string.

Method Summary
abstract void	buildDAG(ElementSet incoming) Builds up a DAG among Elements in this expression.
abstract boolean	isNullable() True of `\epsilon \in L(exp)`
abstract ElementSet	lastSet() Computes `LAST(exp)`

Field Detail

public static final Expression EPSILON

Expression that represents epsilon, the length-0 string.

abstract void buildDAG(ElementSet incoming)

Builds up a DAG among Elements in this expression.

abstract boolean isNullable()

True of \epsilon \in L(exp)

abstract ElementSet lastSet()

Computes LAST(exp)